Turbulence modeling in the age of data

K Duraisamy, G Iaccarino, H **ao - Annual review of fluid …, 2019 - annualreviews.org
Data from experiments and direct simulations of turbulence have historically been used to
calibrate simple engineering models such as those based on the Reynolds-averaged Navier …

Quantification of model uncertainty in RANS simulations: A review

H **ao, P Cinnella - Progress in Aerospace Sciences, 2019 - Elsevier
In computational fluid dynamics simulations of industrial flows, models based on the
Reynolds-averaged Navier–Stokes (RANS) equations are expected to play an important …

Physics-informed machine learning approach for augmenting turbulence models: A comprehensive framework

JL Wu, H **ao, E Paterson - Physical Review Fluids, 2018 - APS
Reynolds-averaged Navier-Stokes (RANS) equations are widely used in engineering
turbulent flow simulations. However, RANS predictions may have large discrepancies due to …

Perspectives on machine learning-augmented Reynolds-averaged and large eddy simulation models of turbulence

K Duraisamy - Physical Review Fluids, 2021 - APS
This work presents a review and perspectives on recent developments in the use of machine
learning (ML) to augment Reynolds-averaged Navier-Stokes (RANS) and large eddy …

Predictive large-eddy-simulation wall modeling via physics-informed neural networks

XIA Yang, S Zafar, JX Wang, H **ao - Physical Review Fluids, 2019 - APS
While data-based approaches were found to be useful for subgrid scale (SGS) modeling in
Reynolds-averaged Navier-Stokes (RANS) simulations, there have not been many attempts …

RANS turbulence model development using CFD-driven machine learning

Y Zhao, HD Akolekar, J Weatheritt, V Michelassi… - Journal of …, 2020 - Elsevier
This paper presents a novel CFD-driven machine learning framework to develop Reynolds-
averaged Navier-Stokes (RANS) models. The CFD-driven training is an extension of the …

Reynolds-averaged Navier–Stokes equations with explicit data-driven Reynolds stress closure can be ill-conditioned

J Wu, H **ao, R Sun, Q Wang - Journal of Fluid Mechanics, 2019 - cambridge.org
Reynolds-averaged Navier–Stokes (RANS) simulations with turbulence closure models
continue to play important roles in industrial flow simulations. However, the commonly used …

Quantifying model form uncertainty in Reynolds-averaged turbulence models with Bayesian deep neural networks

N Geneva, N Zabaras - Journal of Computational Physics, 2019 - Elsevier
Data-driven methods for improving turbulence modeling in Reynolds-Averaged Navier–
Stokes (RANS) simulations have gained significant interest in the computational fluid …

Numerical evidence of logarithmic regions in channel flow at

Y Yamamoto, Y Tsuji - Physical Review Fluids, 2018 - APS
Direct numerical simulations of channel flow up to R e τ= 8000 have been performed to
determine the existence of a logarithmic region in channel flow at high-Reynolds number. It …

[HTML][HTML] Data-driven modelling of the Reynolds stress tensor using random forests with invariance

MLA Kaandorp, RP Dwight - Computers & Fluids, 2020 - Elsevier
A novel machine learning algorithm is presented, serving as a data-driven turbulence
modeling tool for Reynolds Averaged Navier-Stokes (RANS) simulations. This machine …